# For what values of x is x2 2x 24 true

Asked by wiki @ in Mathematics viewed by 258 People

For what values of x is x2 + 2x = 24 true?

X² + 2x = 24

Organizing:
x² + 2x - 24 = 0

Delta:
Δ = b² - 4.a.c
Δ = 2² - 4 * 1 * -24
Δ = 4 - 4 * 1 * -24
Δ = 100

x = (-b +- √Δ)/2*a

x' = (-2 + √100)/2*1
x' = 8 / 2
x' = 4

x'' = (-2 - √100)/2*1
x'' = -12 / 2
x'' = -6

Result: x = 4 or x = - 6 .

Good studies! :)

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